MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it functions as a link farm pointing to compromised WordPress sites and disposable hosting. The embedded URLs likely lead to phishing content or further malware downloads, serving as a malicious attachment in a potential spearphishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://laborke.ru/uplcv?utm_term=play+store+device+download PDF link annotation
- https://hsiaoying.com/userfiles/file/22329022139.pdfIn PDF document text
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d07b732edf---vovavesivagunexoxidasege.pdfIn PDF document text
- http://susutour.com/userfile/file/pubudifuwapubalowamex.pdfIn PDF document text
- http://nanouklid.cz/upload/file/wuremerovolide.pdfIn PDF document text
- http://skyrybupaslaugos.lt/uploads/files/xusulowatamuf.pdfIn PDF document text
- http://bociany.sk/media/file/fisaraxebevisavul.pdfIn PDF document text
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/7ba033094535f07fb37b0b31c63d1dc6/79692930429.pdfIn PDF document text
- http://niktid.ru/userfiles/file/26873292573.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ef44002c8f---26386110930.pdfIn PDF document text
- https://konzolstudio.ro/uploaded_files/file/46014568540.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1614014001368e---rebefekufokidisun.pdfIn PDF document text
- http://csc-027.com/userfiles/file/20210916184938_p6h464.pdfIn PDF document text
- http://rsti.biz/files/fck/file/17505714692.pdfIn PDF document text
- http://palyavalaszto.hu/teszt/upload/file/kexilekosomib.pdfIn PDF document text
- https://stichtingech.org/ckfinder/userfiles/files/legudinixorusesega.pdfIn PDF document text
- http://queensparkview.com/image/upload/File/63499564439.pdfIn PDF document text
- http://curry-box-deluxe.de/userfiles/file/pededegesalozojilekevuz.pdfIn PDF document text
- http://3wsystems.com/shipinc/userfiles/files/sazesawipukaniguditumapun.pdfIn PDF document text
- https://sowlindia.com/userfiles/file/pexudugirafa.pdfIn PDF document text
- http://tercovci.cz/files/file/26262355352.pdfIn PDF document text
- http://areawifi.com/DESARROLLO/userfiles/files/35912484526.pdfIn PDF document text
- http://vet-spb.com/userfiles/file/fudemuwonogokozodasojal.pdfIn PDF document text
- http://m3hotels.com/userfiles/file/19622489082.pdfIn PDF document text
- http://kemnhapkhau.com/upload/files/41156858317.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cb88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB88 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e39f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE39F | 10628 bytes |
SHA-256: 38f9b22a35d5eaf2ad44ab699df38cb73dcbe5bdf5aa591bb1f100a423bb893a |
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font_02_sfnt_off0000fc2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC2D | 16908 bytes |
SHA-256: db17677728971a67fa478aac1c26e3d2fb297cbc5f673774ca1916c4ce32fc68 |
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